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1、电力英语技术术语一、 锅炉部分1超临界压力锅炉 supercritical pressure boiler2. 亚临界压力锅炉 subcritical pressure boiler3. 超高压锅炉 super-high pressure boiler4. 蒸汽锅炉 steam boiler/A closed tank in which water is converted into steam under pressure.5. 蒸汽发生器 steam generator/A closed tank in which water is converted into steam under p
2、ressure.6. 液态排渣锅炉wet bottom boiler/ A wet-bottom furnace or wet-bottom boiler is boiler that contains a wet bottom furnace. It is a kind of boiler used for pulverised fuel firing. In wet bottom boiler the bottom ash is kept in a molten state and tapped off as a liquid. Wet bottom boiler slag is a te
3、rm that describes the molten condition of the ash as it is drawn from the bottom of the slag-tap or cyclone furnaces. An advantage is the fact that the end product in this process has a higher value compared to that of a dry bottom boiler. Wet bottom boilers are preferred for low volatile coals that
4、 produce a lot of ash. But it has higher investment costs and higher maintenance costs, so it is built less often.7. 固态排渣锅炉 dry bottom boiler8. 燃煤锅炉 coal-fired boiler9. 燃气锅炉 Gas-fired boiler10.燃油锅炉 oil-fired boiler11.自然循环锅炉 natural circulation boiler/ In a natural circulation boiler the circulation
5、is achieved by the difference in density when the water in the boiler is heated.12.汽包（锅筒）锅炉 drum boiler13.强制循环锅炉 controlled circulation boiler14.直流锅炉 once-through boiler/A boiler in which water flows, without recirculation, sequentially through the economizer, furnace wall, and evaporating and super
6、heating tubes.15.复合循环锅炉 combined circulation boiler16.旋风炉 cyclone furnace boiler/ A water-cooled horizontal cylinder in which fuel (coal, gas, or oil) is fired and heat is released at extremely high rates. When firing coal, the crushed coal is introduced tangentially into the burner at the front end
7、 of the cyclone (see illustration). About 15% of the combustion air is used as primary and tertiary air to impart a whirling motion to the particles of coal. The whirling, or centrifugal, action on the fuel is further increased by the tangential admission of high-velocity secondary air into the cycl
8、one.Schematic diagram of cyclone furnace. (From T. Baumeister, ed., Standard Handbook for Mechanical Engineers, 8th ed., McGraw-Hill, 1978)The products of combustion are discharged through a water-cooled reentrant throat at the rear of the cyclone into the boiler furnace. Essentially, the fundamenta
9、l difference between cyclone furnaces and pulverized coalfired furnaces is the manner in which combustion takes place. In pulverized coalfired furnaces, particles of coal move along with the gas stream; consequently, relatively large furnaces are required to complete the combustion of the suspended
10、fuel. With cyclonic firing, the coal is held in the cyclone and the air is passed over the fuel. Thus, large quantities of fuel can be fired and combustion completed in a relatively small volume, and the boiler furnace is used to cool the products of combustion. See also Boiler; Steam-generating fur
11、nace; Steam-generating unit.17.沸腾炉 fluidized bed combustion(FBC)boiler/ Fluidized bed combustion (FBC) is a combustion technology used in power plants. FBC plants are more flexible than conventional plants in that they can be fired on coal and biomass, among other fuels. Fluidized beds suspend solid
12、 fuels on upward-blowing jets of air during the combustion process. The result is a turbulent mixing of gas and solids. The tumbling action, much like a bubbling fluid, provides more effective chemical reactions and heat transfer.Combustion systems for solid fuelsFBC reduces the amount of sulfur emi
13、tted in the form of SOx emissions. Limestone is used to precipitate out sulfate during combustion, which also allows more efficient heat transfer from the boiler to the apparatus used to capture the heat energy (usually water tubes). The heated precipitate coming in direct contact with the tubes(hea
14、ting by conduction) increases the efficiency. Since this allows coal plants to burn at cooler temperatures, less NOx is also emitted. However, burning at low temperatures also causes increased polycyclic aromatic hydrocarbon emissions. FBC boilers can burn fuels other than coal, and the lower temperatures of combustion (800 C / 1500 F ) have other added benefits as well.18.循环硫化床circulating fluidized bed combustion(CFB)boiler19.增压循环硫化床锅炉pressurized circulating fluidized bed combustion(PCFBC) boiler20.链条锅炉chain-grate boiler21.热水锅炉hot-water boiler22.废热（余热）锅炉waste-heat b
